Integrated artificial marsh sewage treatment system
Technical field
The present invention relates to water technology, particularly relate to a kind of technology of integrated artificial marsh sewage treatment system.
Background technology
Artificial swamp, as a kind of emerging sewage treatment process, rises the country such as Germany, the U.S., Denmark the seventies.In China because Small Urban is numerous, densely populated, fund and technology limited, develop large-scale sewage work by very large difficulty, therefore build and running expense low, safeguard that simple, respond well Artificial Wetland Techniques has broad application prospects in China.
In current constructed wetland waste water treatment technology, the removal of dirty water pollutant mainly relies on wetland main body, sewage treating efficiency is often not high, this situation is caused to be because in Wetland Design process, wetland water inlet is general only through simple precipitation or grid slagging-off, and wetland water inlet Pollutant levels are too high.And current artificial swamp concerning Land Requirement Capacity relative to process the water yield generally on the high side, cause the reason of this situation to be that many artificial swamp hydraulic loads are low, namely unit surface wetland can the amount of disposing of sewage low.And existing artificial swamp often easily blocks in operational process, the reason of blocking have wetland influent quality to be difficult to control concentration of suspension is too high, process water rate control is unstable, water distribution is uneven, wetland main body filler infiltration weak effect.
Summary of the invention
For the defect existed in above-mentioned prior art, it is high that technical problem to be solved by this invention is to provide a kind of sewage treating efficiency, and floor space is little, hydraulic load is large, stable not susceptible to plugging integrated artificial marsh sewage treatment system.
In order to solve the problems of the technologies described above, the integrated artificial marsh sewage treatment system of one provided by the present invention, comprises the constructed wetland bed for purifying water body, it is characterized in that: also comprise anaerobism treating pond, lift pump;
The top tiling of described constructed wetland bed has for the water distributor to its water distribution, and the bottom tiling of constructed wetland bed has the water collector for collecting water body;
Described anaerobism treating pond internal fixtion has triphase separator, the cell cavity of anaerobism treating pond is separated into each chamber up and down by this triphase separator, upper chamber's internal fixtion wherein has effluent weir, and surround the skimming plate of effluent weir, the chamber wall of lower chambers offers wastewater inlet, and offer mud discharging mouth at the bottom of the chamber of lower chambers;
Described triphase separator is by the first separation hood, second separation hood is formed, first separation hood is the cover body of the inversed taper platform shape of about one both ends open, second separation hood is a cone-shaped cover body of a downward unidirectional opening, second separation hood is fixed in the first separation hood, the lower edge of the second separation hood engages with the inwall of the first separation hood, and offer multiple flowing hole at the lower rim of the second separation hood, each flowing hole is uniformly distributed along the lower rim of the second separation hood, the top of the second separation hood offers a venting port, this venting port connects through a vapor pipe and causes anaerobism treating pond outside,
Described skimming plate, higher than triphase separator, has space between skimming plate and effluent weir, and the water-in of effluent weir is higher than the base of skimming plate;
The water-in of described lift pump receives the water outlet of effluent weir through pipe fitting, water distributor is received at the pump mouth of a river of lift pump.
Further, the top of described anaerobism treating pond is by a cover closure, and described constructed wetland bed is installed on the cover board.
Further, described effluent weir is built with liquid level switch, and the on off control end of lift pump received by this liquid level switch.
Further, on described constructed wetland bed, kind is implanted with wetland plant.
Further, described constructed wetland bed is stacked gradually from top to bottom by multiple medium layer and forms, and described medium layer comprises gac granulosa, haydite layer, plastic packing layer, fine sand layer, rubble sublayer.
Further, the thickness of described medium layer is 15 ~ 30cm.
Integrated artificial marsh sewage treatment system provided by the invention, triphase separator is utilized to carry out three phase separation to sewage, sewage is after the process of anaerobism treating pond, water pollutant concentration reduces, make constructed wetland bed can process the sewage of more big yield in same time, have the advantages that sewage treating efficiency is high, and hydraulic load is large, stable not easily blocks; In addition, constructed wetland bed is directly installed on anaerobism treating pond top, can also floor space be reduced.
Accompanying drawing explanation
Fig. 1 is the structural representation of the integrated artificial marsh sewage treatment system of the embodiment of the present invention;
Fig. 2 is the vertical view of the triphase separator in the integrated artificial marsh sewage treatment system of the embodiment of the present invention.
Embodiment
Illustrate below in conjunction with accompanying drawing and embodiments of the invention are described in further detail; but the present embodiment is not limited to the present invention; every employing analog structure of the present invention and similar change thereof, all should list protection scope of the present invention in, the pause mark in the present invention all represent and relation.
As Figure 1-Figure 2, the integrated artificial marsh sewage treatment system of the one that the embodiment of the present invention provides, comprises the constructed wetland bed 1 for purifying water body, it is characterized in that: also comprise anaerobism treating pond 2, lift pump 6;
The top tiling of described constructed wetland bed 1 has for the water distributor 7 to its water distribution, and the bottom tiling of constructed wetland bed 1 has the water collector 8 for collecting water body;
Described anaerobism treating pond 2 internal fixtion has triphase separator, the cell cavity of anaerobism treating pond is separated into each chamber up and down by this triphase separator, upper chamber's internal fixtion wherein has effluent weir 4, and surround the skimming plate 5 of effluent weir 4, the chamber wall of lower chambers offers wastewater inlet 21, and offer mud discharging mouth 22 at the bottom of the chamber of lower chambers;
Described triphase separator is by the first separation hood 31, second separation hood 32 is formed, first separation hood 31 is cover bodies of the inversed taper platform shape of about one both ends open, second separation hood 32 is cone-shaped cover bodies for a downward unidirectional opening, second separation hood 32 is fixed in the first separation hood 31, the lower edge of the second separation hood 32 engages with the inwall of the first separation hood 31, and offer multiple flowing hole 321 at the lower rim of the second separation hood 32, each flowing hole 321 is uniformly distributed along the lower rim of the second separation hood 32, the top of the second separation hood 32 offers a venting port, this venting port connects through a vapor pipe 322 and causes anaerobism treating pond 2 outside,
Described skimming plate 5, higher than triphase separator, has space between skimming plate 5 and effluent weir 4, and the water-in of effluent weir 4 is higher than the base of skimming plate 5;
The water-in of described lift pump 6 receives the water outlet of effluent weir 4 through pipe fitting, water distributor 7 is received at the pump mouth of a river of lift pump 6.
In the embodiment of the present invention, the top of described anaerobism treating pond 2 is closed by a cover plate 20, and described constructed wetland bed 1 is arranged on cover plate 20.
In the embodiment of the present invention, described effluent weir 4 is built with liquid level switch (not shown), and the on off control end of lift pump 6 received by this liquid level switch.
In the embodiment of the present invention, described constructed wetland bed 1 is planted and is implanted with wetland plant 9, wetland plant can choose the plants such as Canna generalis Bailey, Herba Eichhorniae, Fructus Sapindi Mukouossi, yellow iris, Rhizome of Grass leaf Sweelflag, alternanthera philoxeroides, these plants not only can delivering oxygen to root district, there is provided root-zone microorganism to grow, breed and the demand of degraded to oxygen, also can maintain and strengthen the hydraulic conductivity power in artificial wet land system simultaneously, obvious removal can also be had to nitrogen, phosphorus in eutrophic water body.
In the embodiment of the present invention, described water distributor 7 is the water pipes being evenly equipped with multiple water distribution head, and described water collector 8 is the water pipes being evenly equipped with multiple upwards open inlet.
In the embodiment of the present invention, described constructed wetland bed 1 is stacked gradually from top to bottom by multiple medium layer and forms, each medium layer is followed successively by gac granulosa, haydite layer, plastic packing layer, fine sand layer, rubble sublayer from top to bottom, the thickness of each medium layer is about 15 ~ 30cm, activated carbon grain is used for the phosphorus in planar water, haydite is for strengthening matrix ventilation and accelerating infiltration, and plastic filler is as biofilm carrier, and fine sand, stone chippings are used for packed bed body.
The embodiment of the present invention is applicable to sewage disposal, and concrete treatment process is as follows:
Sewage enters anaerobism treating pond 2 by wastewater inlet 21, carry out precipitating and anaerobic reaction, precipitation and reaction for some time after, Gu, liquid, gas three-phase mixture will rise in anaerobism treating pond, when three-phase mixture rises to triphase separator place, carry out solid under the interception of triphase separator, liquid, gas three phase separation, the bottom chamber that most solid is intercepted at anaerobism treating pond precipitates gradually, discharge finally by mud discharging mouth 22, most gas then accumulates in the top of the second separation hood 32, and discharged by vapor pipe 322 that (expellant gas is rich in biogas usually, combustion gas can be worked as use), water body then flows into the upper chamber of anaerobism treating pond by each flowing hole 321 of the second separation hood 32 lower rim, and then effluent weir 4 is flowed into after the slag that skimming plate 5 tackles liquid level, when water level in effluent weir 4 arrives set(ting)value, liquid level switch in effluent weir 4 closes, thus control lift pump 6 starts, the water body in effluent weir 4 is made to enter water distributor 7 under the effect of lift pump 6, the top layer of constructed wetland bed 1 is sprayed at by water distributor 7, then downward diafiltration in constructed wetland bed 1, and purified by constructed wetland bed in downward diafiltration process, water body after purification collects rear discharge by water collector 8, when the water level in effluent weir 4 is lower than set(ting)value, the liquid level switch in effluent weir 4 disconnects, thus it is out of service to control lift pump 6.